:root{--font-family-base: "Noto Sans JP", "Helvetica Neue", sans-serif;--font-display: "Cormorant", "Georgia", serif;--text-xs: clamp(.75rem, .7rem + .25vw, .875rem);--text-sm: clamp(.875rem, .8rem + .35vw, 1rem);--text-base: clamp(1rem, .95rem + .25vw, 1.125rem);--text-lg: clamp(1.125rem, 1rem + .75vw, 1.5rem);--text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);--text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--space-20: 5rem;--space-24: 6rem;--color-bg: #fafbfc;--color-surface: #f4f6f8;--color-surface-soft: #ebeef2;--color-text: #1a1d21;--color-text-secondary: #5a6370;--color-text-light: #b0b8c1;--color-primary: #2d6a9f;--color-primary-dark: #1e5380;--color-primary-mid: #3a8fd4;--color-primary-light: #eef4fa;--color-accent: #3a8fd4;--color-accent-light: #eef4fa;--color-emphasis-red: #c04030;--color-emphasis-yellow: #FFF59D;--color-border: #e0e4e8;--color-border-light: #ebeef2;--color-explanation-bg: #eef4fa;--color-header-bg: #1a2638;--color-header-text: #e8ecf0;--max-content-width: 960px;--article-width: 65ch;--line-height-body: 1.85;--font-size-h1: var(--text-2xl);--font-size-h2: var(--text-xl);--font-size-h3: var(--text-lg);--font-size-body: var(--text-base);--font-size-small: var(--text-sm);--shadow-sm: 0 1px 2px rgba(26, 29, 33, .05);--shadow-md: 0 4px 12px rgba(26, 29, 33, .07);--shadow-lg: 0 12px 32px rgba(26, 29, 33, .1);--transition-base: .18s cubic-bezier(.16, 1, .3, 1);--transition-slow: .35s ease;--ease-out: cubic-bezier(.16, 1, .3, 1);--radius-sm: .25rem;--radius-md: .5rem;--radius-lg: .75rem}@media(prefers-color-scheme:dark){:root{--color-bg: #18181b;--color-surface: #212124;--color-surface-soft: #2a2a2e;--color-text: #e5e5ea;--color-text-secondary: #8e8e93;--color-text-light: #555558;--color-primary: #6db3e8;--color-primary-dark: #8dc5f0;--color-primary-mid: #6db3e8;--color-primary-light: #2a2a2e;--color-accent: #6db3e8;--color-accent-light: #2a2a2e;--color-border: #3a3a3f;--color-border-light: #2a2a2e;--color-explanation-bg: #2a2a2e;--color-emphasis-red: #e06050;--color-header-bg: #111114;--color-header-text: #e5e5ea;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .25);--shadow-md: 0 4px 12px rgba(0, 0, 0, .35);--shadow-lg: 0 12px 32px rgba(0, 0, 0, .45)}}*,*:before,*:after{box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-family-base);font-size:var(--font-size-body);line-height:var(--line-height-body);color:var(--color-text);background-color:var(--color-bg);margin:0;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}img{max-width:100%;height:auto}a{color:var(--color-primary-mid);text-decoration:none;transition:color var(--transition-base),opacity 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var(--transition-base)}.hero-button-primary{background-color:#fff;color:var(--color-primary)}.hero-button-primary:hover{background-color:var(--color-accent-light);color:var(--color-primary);transform:translateY(-2px);box-shadow:var(--shadow-md);text-decoration:none;opacity:1}.hero-button-secondary{background:transparent;color:#fff;border:2px solid rgba(255,255,255,.55)}.hero-button-secondary:hover{background:#ffffff1a;border-color:#fff;text-decoration:none;opacity:1}.section-title{font-size:1.35rem;font-weight:700;color:var(--color-primary);margin:0 0 1.5rem;padding-bottom:.6rem;border-bottom:2px solid var(--color-border);position:relative}.section-title:after{content:"";position:absolute;bottom:-2px;left:0;width:48px;height:2px;background:var(--color-accent);border-radius:2px}.category-entry-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:1rem;margin-bottom:3.5rem}@media(min-width:600px){.category-entry-grid{grid-template-columns:repeat(3,1fr)}}.category-entry-card{display:flex;flex-direction:column;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);padding:1.2rem 1rem;text-decoration:none;color:inherit;transition:all var(--transition-base);box-shadow:var(--shadow-sm)}.category-entry-card:hover{border-color:var(--color-primary-mid);box-shadow:var(--shadow-md);transform:translateY(-2px);text-decoration:none;opacity:1}.category-entry-icon{font-size:1.6rem;margin-bottom:.5rem}.category-entry-name{font-size:.88rem;font-weight:700;color:var(--color-primary);line-height:1.4;margin-bottom:.35rem}.category-entry-query{font-size:.75rem;color:var(--color-text-secondary);line-height:1.45}.home-section{margin-bottom:3.5rem}.home-section-header{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:1.5rem;padding-bottom:.6rem;border-bottom:2px solid var(--color-border);position:relative}.home-section-header:after{content:"";position:absolute;bottom:-2px;left:0;width:48px;height:2px;background:var(--color-accent)}.home-section-header h2{font-size:1.25rem;font-weight:700;color:var(--color-primary);margin:0;padding:0;border:none}.home-section-header h2:after{display:none}.home-section-link{font-size:.83rem;color:var(--color-primary-mid);white-space:nowrap}.see-more{text-align:center;margin-top:2rem}.card-grid{display:grid;grid-template-columns:1fr;gap:1.2rem}@media(min-width:440px){.card-grid{grid-template-columns:repeat(2,1fr)}}@media(min-width:680px){.card-grid{grid-template-columns:repeat(3,1fr)}}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-sm);transition:all var(--transition-base);display:flex;flex-direction:column;height:100%}.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:var(--color-primary-mid)}.card a{text-decoration:none;color:inherit;display:flex;flex-direction:column;height:100%}.card a:hover{opacity:1}.card-image img{width:100%;height:auto;aspect-ratio:16 / 9;object-fit:cover;display:block;transition:transform var(--transition-slow)}.card:hover .card-image img{transform:scale(1.03)}.card-content{padding:1rem 1.1rem 1.1rem;display:flex;flex-direction:column;flex-grow:1;gap:.4rem}.card-category{font-size:.72rem;font-weight:700;color:var(--color-primary-mid);background:var(--color-primary-light);padding:.15rem .55rem;border-radius:20px;display:inline-block;width:fit-content}.card-title{font-size:.95rem;font-weight:700;color:var(--color-text);line-height:1.5;margin:0;padding:0;border:none;flex-grow:1}.card-title:after{display:none}.card time{font-size:.76rem;color:var(--color-text-light);display:block;margin-top:auto}.page-header{margin-bottom:2.5rem;padding-bottom:1.5rem;border-bottom:1px solid var(--color-border)}.page-header h1{margin-bottom:.4rem;font-size:var(--font-size-h1)}.page-header .subtitle,.page-header .post-count,.page-header .tag-label{font-size:1rem;color:var(--color-text-secondary);margin:0}.page-header .tag-label{font-size:.85rem;margin-bottom:.25rem}h1,h2,h3,h4{line-height:1.4;letter-spacing:.02em}h1{font-size:var(--font-size-h1);font-weight:700;color:var(--color-text)}h2{font-size:var(--text-lg);font-weight:600;padding-bottom:.75rem;border-bottom:2px solid var(--color-primary);margin-top:3rem;margin-bottom:1rem;color:var(--color-text)}h3{font-size:var(--font-size-h3);font-weight:600;margin-top:2rem;margin-bottom:.75rem}h3:after{display:none}hr{border:0;border-top:1px solid var(--color-border);margin:2rem 0}mark{background:linear-gradient(transparent 65%,#fff176 65%);padding:0;font-weight:700;background-color:transparent}.text-red{color:var(--color-emphasis-red)}.content-body p,.content-body ul,.content-body ol,.content-body blockquote,.content-body hr{margin-top:0;margin-bottom:1rem}.content-body p{line-height:1.9}.content-body ul,.content-body ol{padding-left:1.5rem}.content-body li{margin-bottom:.5rem;line-height:1.8}.content-body a{color:var(--color-primary);text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--color-primary) 30%,transparent);text-underline-offset:3px;transition:text-decoration-color .18s}.content-body a:hover{text-decoration-color:var(--color-primary);opacity:1}.content-body h2,.content-body h3{margin-top:3rem;margin-bottom:1rem}.quote-block{margin-block:2rem;padding:1.5rem;background:var(--color-surface);border-left:3px solid var(--color-primary);border-radius:0 .5rem .5rem 0}.quote-block__original{font-family:var(--font-display, serif);font-size:clamp(1.125rem,1rem + .75vw,1.5rem);line-height:1.8;margin-bottom:.75rem;color:var(--color-text)}.quote-block__modern{font-size:clamp(.875rem,.8rem + .35vw,1rem);color:var(--color-text-secondary);line-height:1.7;margin-bottom:.5rem}.quote-block__source{font-size:clamp(.75rem,.7rem + .25vw,.875rem);color:var(--color-text-light);font-style:italic}.key-points{margin-block:2rem;padding:1.5rem;background:var(--color-surface);border-radius:.75rem;border:1px solid color-mix(in srgb,var(--color-border) 40%,transparent)}.key-points__title{font-size:clamp(.875rem,.8rem + .35vw,1rem);font-weight:600;margin-bottom:.75rem;display:flex;align-items:center;gap:.5rem}.key-points ul{padding-left:1.25rem}.key-points li{font-size:clamp(.875rem,.8rem + .35vw,1rem);line-height:1.7;margin-bottom:.5rem;color:var(--color-text-secondary)}.youtube-embed{margin-block:2rem;border-radius:.75rem;overflow:hidden;aspect-ratio:16 / 9;background:var(--color-surface-soft)}.youtube-embed iframe{width:100%;height:100%;border:none}.video-wrapper{position:relative;width:100%;padding-top:56.25%;margin-bottom:2em;border-radius:.75rem;overflow:hidden}.faq{margin-top:3rem;padding-top:2rem;border-top:1px solid var(--color-border)}.faq__title{font-family:var(--font-display, serif);font-size:clamp(1.125rem,1rem + .75vw,1.5rem);font-weight:400;margin-bottom:1.5rem;border:none}.faq__title:after{display:none}.faq__item{padding-block:1rem;border-bottom:1px solid color-mix(in srgb,var(--color-border) 40%,transparent)}.faq__question{font-size:clamp(1rem,.95rem + .25vw,1.125rem);font-weight:600;margin-bottom:.5rem;border:none}.faq__question:after{display:none}.faq__answer{font-size:clamp(.875rem,.8rem + .35vw,1rem);color:var(--color-text-secondary);line-height:1.7}.related{margin-top:4rem;padding-top:2rem;border-top:1px solid var(--color-border)}.related__title{font-size:clamp(.875rem,.8rem + .35vw,1rem);font-weight:600;text-transform:uppercase;letter-spacing:.1em;color:var(--color-text-secondary);margin-bottom:1.5rem;border:none}.related__title:after{display:none}.explanation-box{background-color:var(--color-surface);padding:1.35rem 1.5rem;border-radius:0 .5rem .5rem 0;border-left:3px solid var(--color-primary);margin-bottom:2em}.explanation-box.no-title{padding-block:1.25rem}.explanation-box .content{width:fit-content;margin:0 auto;max-width:90%;text-align:left}.explanation-box .content>:first-child{margin-top:0}.explanation-box .explanation-title{display:table;margin:.75em auto .5em;font-size:1.05em;font-weight:700;color:var(--color-primary);border-bottom:1px solid var(--color-primary);padding-bottom:.2em}.explanation-box .content>:last-child{margin-bottom:0}.quote-box{position:relative;padding:1.25em 0;border-top:1px solid var(--color-border);border-bottom:1px solid var(--color-border);color:var(--color-text);font-style:normal;background-color:transparent;margin:0 auto 2em;max-width:95%;text-align:left}.quote-box.has-source{display:flex;align-items:center;justify-content:center;min-height:7rem;padding-block:1.25em}.quote-box .quote-source{display:block;position:absolute;right:.8em;bottom:.85em;text-align:right;font-size:.9em;font-style:italic;font-weight:400;color:var(--color-text-secondary);margin:0;transform:translateY(.35em)}.quote-box .quote-content{width:fit-content;margin:0 auto;max-width:90%;text-align:left;overflow-wrap:break-word}.quote-box .quote-content>p{text-align:left}.quote-box .quote-content>:first-child{margin-top:0}.quote-box:before{content:"❝";position:absolute;left:-.1em;top:.02em;font-size:3.45em;color:var(--color-border);line-height:1;font-family:serif;pointer-events:none;opacity:.7}.quote-box .quote-content>:last-child{margin-bottom:0}.osyougyo-box{position:relative;padding:0em 2rem;background-color:#fff;border:1px solid var(--color-border);border-radius:0;box-shadow:0 4px 6px #0000000a;display:flex;flex-direction:column;align-items:center;margin-top:1.8rem;margin-bottom:2.5rem}.osyougyo-box.has-source{justify-content:center;min-height:7.5rem;padding-block:1.2rem}.osyougyo-box .quote-source{display:block;position:absolute;right:2rem;bottom:.85rem;text-align:right;font-size:.9em;font-style:italic;font-weight:400;color:var(--color-text-secondary);margin:0;transform:translateY(.35em);width:100%}.osyougyo-box .quote-content{max-width:95%;margin:0 auto;text-align:left;font-size:1.1rem;font-weight:500;line-height:1.7;white-space:pre-wrap}.osyougyo-box .quote-content>:first-child{margin-top:0}.osyougyo-box .quote-content>:last-child{margin-bottom:0}.tag-list{display:flex;flex-wrap:wrap;gap:.5rem}.tag-item,.tag{display:inline-block;font-size:clamp(.7rem,1vw,.8rem);padding:.15rem .75rem;background:var(--color-surface-soft);border-radius:9999px;color:var(--color-text-secondary);text-decoration:none;transition:background .18s,color .18s}.tag-item:hover,.tag:hover{background:var(--color-border);color:var(--color-text);text-decoration:none;opacity:1}.image-container{margin:0 0 2em}.image-container img{width:100%;height:auto;display:block;border-radius:var(--radius-sm)}.image-container figcaption{font-size:var(--font-size-small);color:var(--color-text-secondary);margin-top:.5rem;text-align:center}.video-wrapper{position:relative;width:100%;padding-top:56.25%;margin-bottom:2em;border-radius:var(--radius-md);overflow:hidden}.video-container{position:absolute;inset:0;border-radius:inherit;overflow:hidden}.video-container iframe{width:100%;height:100%;border:0}.reference-video-section{margin-top:2.5rem}.reference-video-section p{text-align:center;font-weight:700;margin-bottom:1rem}.final-cta-container{margin-top:3rem;padding-top:2.5rem;border-top:1px solid var(--color-border)}.cta-box{background:linear-gradient(135deg,var(--color-primary-light),#EEF4FF);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:2rem;margin-bottom:2rem;text-align:center}.cta-box h3{font-size:1.15rem;margin:.4rem 0 1rem;border:none;padding:0;color:var(--color-primary)}.cta-box h3:after{display:none}.cta-box p{margin:0 auto 1.5rem;max-width:47ch;color:var(--color-text-secondary)}.cta-button{display:inline-block;background-color:var(--color-primary-mid);color:#fff;padding:.8rem 2rem;border-radius:50px;font-weight:700;text-decoration:none;transition:all var(--transition-base)}.cta-button:hover{background-color:var(--color-primary);transform:translateY(-2px);box-shadow:var(--shadow-md);text-decoration:none;opacity:1}.toc h3{border:none;margin:0;padding:0}.toc h3:after{display:none}.search-widget{position:relative}.search-input{width:100%;padding:.65rem 1rem;border:1px solid var(--color-border);border-radius:var(--radius-md);font-size:.9rem;font-family:var(--font-family-base);background:var(--color-surface);transition:border-color var(--transition-base),box-shadow var(--transition-base)}.search-input:focus{outline:none;border-color:var(--color-primary-mid);box-shadow:0 0 0 3px #1a4a8a1f}.search-results{list-style:none;padding:0;margin:.4rem 0 0;position:absolute;top:100%;left:0;right:0;background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius-md);box-shadow:var(--shadow-lg);max-height:400px;overflow-y:auto;z-index:100}.search-results li{margin:0}.search-results a{display:block;padding:.7rem 1rem;text-decoration:none;color:var(--color-text);border-bottom:1px solid var(--color-border-light);transition:background var(--transition-base)}.search-results li:last-child a{border-bottom:none}.search-results a:hover{background:var(--color-primary-light);text-decoration:none;opacity:1}.search-result-title{display:block;font-weight:600;margin-bottom:.2rem;color:var(--color-primary)}.search-result-excerpt{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:.82rem;color:var(--color-text-secondary);line-height:1.4}.no-results{padding:1rem;text-align:center;color:var(--color-text-secondary);font-size:.88rem}body.draft-mode{border-top:4px solid var(--color-emphasis-red)}.fixed-draft-link{position:fixed;top:10px;right:10px;background-color:var(--color-emphasis-red);color:#fff;padding:8px 12px;border-radius:var(--radius-sm);font-size:.8rem;font-weight:700;text-decoration:none;z-index:9999;box-shadow:var(--shadow-md)}@keyframes fadeInUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.card,.category-entry-card{animation:fadeInUp .38s ease both}